debian7源：
|
1 2 3 |
deb http://mirrors.ustc.edu.cn/debian/ stable main contrib non-free deb http://mirrors.ustc.edu.cn/debian/ stable-updates main contrib non-free deb http://mirrors.ustc.edu.cn/debian-security/ stable/updates main |
debian8源：
|
1 2 3 |
deb http://mirrors.ustc.edu.cn/debian/ jessie main contrib non-free deb http://mirrors.ustc.edu.cn/debian/ jessie-updates main contrib non-free deb http://mirrors.ustc.edu.cn/debian-security/ jessie/updates main |
干掉文件夹：
进入 /etc/apt
rm -rf sources.list.d
vim sources.list
然后 atp-get update
